jip Posted May 14, 2014 Share #1 Â Posted May 14, 2014 Advertisement (gone after registration) Hello, Â I have got a question I was wondering what the Leica R8/R9 do with ROM lenses. I can understand the use on the R8/9+DMR for EXIF data and possible afterwards with digital corrections. Â But what does the R8/R9 do with ROM lenses when you are shooting film, I am asking because I'm in the process of buying a 80mm Summilux. And I am wondering why I should pay more for a ROM version, will I really benefit from it? I'm gonna use it on the R8 with film, and M240 with R-M adapter. Â Thanks! Link to post Share on other sites More sharing options...
Advertisement Posted May 14, 2014 Posted May 14, 2014 Hi jip, Take a look here Leica R8/9 and ROM lenses. I'm sure you'll find what you were looking for!
salvi Posted May 14, 2014 Share #2  Posted May 14, 2014 Hi The ROM will tell the flash the focal lenght and actual aperture. I am not sure, if the matrix measurement in the R8/9 usese also this information for correction of the automatic exposure setting...  Regards  Sal Link to post Share on other sites More sharing options...
jip Posted May 14, 2014 Author Share #3 Â Posted May 14, 2014 Thanks Salvi, Â I don't use flash with my R8 so I guess it's okay to just use non ROM lenses. I usually use spot metering anyway. or do it with a hand held light meter. Link to post Share on other sites More sharing options...
masjah Posted May 14, 2014 Share #4 Â Posted May 14, 2014 Apart from the transmission of focal length information, the ROM chip also tells the camera information about the aperture automatic diaphram dynamics of that particular individual lens sample. This enables the camera to tweak exactly when the shutter fires. (It's a fine tuning process though). Also, I'm pretty sure that in the early days of the DMR, Robert Stevens established that, even back then, lens information enabled the DMR to do some vignetting correction. The ROM chip also tells the camera what the working aperture is, rather than relying on the R cam to do this. This enables ROM extenders to relay to the camera the correctly scaled aperture information, which is useful. For example, when ROM lens is connected to an R8/9 via a 2x ROM extender, a setting of f/22 is displayed in the camera viewfinder as f/45. Link to post Share on other sites More sharing options...
CrisRose Posted May 14, 2014 Share #5 Â Posted May 14, 2014 I almost got an R9 just to make use of the HSS flash support with my SF58 and 35-70/4 ROM... but the R8 was so much cheaper Link to post Share on other sites More sharing options...
jip Posted May 15, 2014 Author Share #6 Â Posted May 15, 2014 Okay, so in the end a ROM lens would be better. Â Â Now, what I notice is that lots of people convert their lenses to canon/Nikon mount. And they remove the ROM from the lens, I was wondering if anyone had a 80 lux rom laying around for me to put on my lens! Haha Link to post Share on other sites More sharing options...
andybarton Posted May 15, 2014 Share #7 Â Posted May 15, 2014 Advertisement (gone after registration) It's only for use on Nikon cameras that the mounts need to be swapped as they can be fitted to a Canon body via an adaptor. Â I doubt whether many people would sell the ROM only as they might one day want to reinstate the original mount. Link to post Share on other sites More sharing options...
jip Posted May 15, 2014 Author Share #8 Â Posted May 15, 2014 It's only for use on Nikon cameras that the mounts need to be swapped as they can be fitted to a Canon body via an adaptor. I doubt whether many people would sell the ROM only as they might one day want to reinstate the original mount. Â Yes you're right, does Leica still install ROM contacts? Link to post Share on other sites More sharing options...
masjah Posted May 15, 2014 Share #9 Â Posted May 15, 2014 Yes you're right, does Leica still install ROM contacts? Â They probably do, but it will cost you!!! Link to post Share on other sites More sharing options...
wildlightphoto Posted May 15, 2014 Share #10 Â Posted May 15, 2014 Yes you're right, does Leica still install ROM contacts? Â I'll bet they can if you supply the parts. Link to post Share on other sites More sharing options...
beekan Posted June 6, 2014 Share #11  Posted June 6, 2014 Hello Everyone ; i have a Leica R Elmarit 2.8 - 90 mm and i need to know what year of made it and also 2 or 3 cam or R only , if you can help me i really be happy.I chose this lens for portrait shooting with my canon eos 6D , i will recieve the lens very soon and please tell me if i make good choise to buy, Summicron was to expensive same lens in the picture Thank you and Best Regards Serial : #2443861 Leica Flex : 11239 Model Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/227099-leica-r89-and-rom-lenses/?do=findComment&comment=2605477'>More sharing options...
masjah Posted June 6, 2014 Share #12 Â Posted June 6, 2014 The summilux.net database puts the year of manufacture at 1970, but this is not always accurate.The SL was introduced (I think) in 1968, so this might suggest that it may well be a two cam lens. However, a further cam may have been added subsequently. You need to post a picture of the rear of the lens. But you can tell for yourself. Cams one and two are like chrome wedges in a circular arc, and the third R-cam is a black stepped device that moves with the aperture setting. Â If you are going to mount it via an adapter on a Canon, it doesn't matter what cams it's got. Â Brian Bower in Leica Reflex Photography reports it as being extremely good optically. Link to post Share on other sites More sharing options...
beekan Posted June 6, 2014 Share #13 Â Posted June 6, 2014 Thank you for your words and replaying ; Best Regards Link to post Share on other sites More sharing options...
beekan Posted June 6, 2014 Share #14 Â Posted June 6, 2014 Thank you. Best Regards Link to post Share on other sites More sharing options...
jip Posted June 8, 2014 Author Share #15  Posted June 8, 2014 Hello Everyone ;i have a Leica R Elmarit 2.8 - 90 mm and i need to know what year of made it and also 2 or 3 cam or R only , if you can help me i really be happy.I chose this lens for portrait shooting with my canon eos 6D , i will recieve the lens very soon and please tell me if i make good choise to buy, Summicron was to expensive same lens in the picture Thank you and Best Regards Serial : #2443861 Leica Flex : 11239 Model  Next time create your own thread, instead of highjacking someone elses... Link to post Share on other sites More sharing options...
MarkP Posted June 8, 2014 Share #16  Posted June 8, 2014 Next time create your own thread, instead of highjacking someone elses...  Jip,  Bekan is clearly a new member and obviously just finding his way around. Cut him/her some slack  Mark Link to post Share on other sites More sharing options...
jip Posted June 8, 2014 Author Share #17 Â Posted June 8, 2014 Mark! You're right, I'm a bit cranky this morning! haha Link to post Share on other sites More sharing options...
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